C Program - Factorial of a Number Using Recursion

C Programming Language Recursion in c (Article) Recursion in c (Program)

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Program:

#include <stdio.h>
long int multiplyNumbers(int n);

int main()
{
    int n;
    printf("Enter a positive integer: ");
    scanf("%d", &n);
    printf("Factorial of %d = %ld", n, multiplyNumbers(n));
    return 0;
}
long int multiplyNumbers(int n)
{
    if (n >= 1)
        return n*multiplyNumbers(n-1);
    else
        return 1;
}

Output:

Enter a positive integer: 6
Factorial of 6 = 720

Explanation:

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